Adding Shields for the "help-wanted" label

[sudhay23]

Description

This PR fixes #4

Notes for Reviewers "help-wanted" issue count sheilds for:

• [x] Meshery
• [x] Service Mesh Landscape
• [x] Service Mesh Performance
• [x] Image Hub ...have been added.

Signed commits

• [x] Yes, I signed my commits.

[sudhay23]

LGTM 🎉 Thanks @sudhay23

Thanks for your inputs @debo19 🎉